The menu is opened from any display mode:

Seven items are available at the main menu level. Only three options are visible on the device screen at a time; the others become available when the “up/down” swing buttons are pressed again. The menu is cyclic at all levels.

Of the seven items, four [ Spectrum, Monitor, Dose, Search] give access to the radiation environment display modes.

The [ Power off] is an action item: when confirmed with the round button, the device turns off.

The [ Settings] opens the device settings submenu.

The [ Device info] shows the device serial number and the firmware and bootloader versions.

Cyclic order at the main level when pressing “down”:

→ → → → → → → …

To select an item — short-press the “up/down” swing buttons; the selected item is highlighted with a negative icon. To confirm — short-press the round button.

The settings level and deeper menu levels can be exited via the [< Back] and [<< Menu quit] items.